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Fang W, Liang G, Li J, Guo S. Microporous Formation Mechanism of Biaxial Stretching PA6/PP Membranes with High Porosity and Uniform Pore Size Distribution. Polymers (Basel) 2022; 14:polym14112291. [PMID: 35683964 PMCID: PMC9183017 DOI: 10.3390/polym14112291] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2022] [Revised: 05/21/2022] [Accepted: 06/01/2022] [Indexed: 02/01/2023] Open
Abstract
The low porosity and wide pore size distribution of biaxial stretching PP microporous membranes continue to be the primary impediments to their industrial application. To solve this problem, there is a critical and urgent need to study the micropore-forming mechanism of PP membranes. In this research, the interfacial micropore formation mechanism of PA6/PP membranes during biaxial stretching was investigated. PA6/PP membranes containing spherical PA6 and fibrillar PA6 were found to exhibit different interfacial micropore formation mechanisms. Numerous micropores were generated in the PA6/PP membranes, containing PA6 spherical particles via the interface separation between the PP matrix and PA6 spherical particles during longitudinal stretching. Subsequent transverse stretching further expanded the two-phase interface, promoting the breakdown and fibrosis of the PP matrix and forming a spider-web-like microporous structure centered on spherical PA6 particles. In PA6/PP membranes with PA6 fibers, fewer micropores were generated during longitudinal stretching, but the subsequent transverse stretching violently separated the PA6 fibers, resulting in a dense fiber network composed of PA6 fibers interwoven with PP fibers. Crucially, the PA6/PP biaxial stretching of microporous membranes presented an optimized pore structure, higher porosity, narrower pore size distribution, and better permeability than β-PP membranes. Furthermore, this study explored a new approach to the fabrication of high-performance PA6/PP microporous membranes, with good prospects for potential industrial application.
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Affiliation(s)
| | | | - Jiang Li
- Correspondence: ; Tel.: +86-028-8546-6077
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2
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Zhang D, Ding L, Wu T, Yang F, Lan F, Cao Y, Xiang M. Facile Preparation of a Lithium-Ion Battery Separator with Thermal Shutdown Function Based on Polypropylene/Polyethylene Microsphere Composites. Ind Eng Chem Res 2021. [DOI: 10.1021/acs.iecr.1c04271] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Daoxin Zhang
- State Key Laboratory of Polymer Materials Engineering, College of Polymer Science and Engineering, Sichuan University, Chengdu 610065, China
| | - Lei Ding
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, Liaocheng University, Liaocheng 252000, China
| | - Tong Wu
- State Key Laboratory of Polymer Materials Engineering, College of Polymer Science and Engineering, Sichuan University, Chengdu 610065, China
| | - Feng Yang
- State Key Laboratory of Polymer Materials Engineering, College of Polymer Science and Engineering, Sichuan University, Chengdu 610065, China
| | - Fang Lan
- State Key Laboratory of Polymer Materials Engineering, College of Polymer Science and Engineering, Sichuan University, Chengdu 610065, China
| | - Ya Cao
- State Key Laboratory of Polymer Materials Engineering, College of Polymer Science and Engineering, Sichuan University, Chengdu 610065, China
| | - Ming Xiang
- State Key Laboratory of Polymer Materials Engineering, College of Polymer Science and Engineering, Sichuan University, Chengdu 610065, China
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3
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Liang G, Fang W, Li J, Guo S. Micropore formation and crystalline evolution during biaxial stretching process of iPP film constructed of ordered and continuous β-transcrystallinity. J Memb Sci 2021. [DOI: 10.1016/j.memsci.2021.119558] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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4
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Ji H, Wang Y, Zhu H, Ni H, Ma Y, Xie L. Research on a strengthening method and mechanism of expanding polypropylene pipe. POLYM ENG SCI 2021. [DOI: 10.1002/pen.25749] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Huajian Ji
- School of Mechanical and Power Engineering East China University of Science and Technology Shanghai China
| | - Yu Wang
- School of Mechanical and Power Engineering East China University of Science and Technology Shanghai China
| | - Huihao Zhu
- School of Mechanical and Power Engineering East China University of Science and Technology Shanghai China
| | - Hui Ni
- School of Mechanical and Power Engineering East China University of Science and Technology Shanghai China
| | - Yulu Ma
- School of Mechanical and Power Engineering East China University of Science and Technology Shanghai China
| | - Linsheng Xie
- School of Mechanical and Power Engineering East China University of Science and Technology Shanghai China
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Yang F, Yang F, Xiang M, Wu T. Preparation of highly oriented β polypropylene and its pore formation mechanism during stretching. POLYMER CRYSTALLIZATION 2021. [DOI: 10.1002/pcr2.10183] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Fan Yang
- State Key Laboratory of Polymer Materials Engineering, College of Polymer Science and Engineering Sichuan University Chengdu China
| | - Feng Yang
- State Key Laboratory of Polymer Materials Engineering, College of Polymer Science and Engineering Sichuan University Chengdu China
| | - Ming Xiang
- State Key Laboratory of Polymer Materials Engineering, College of Polymer Science and Engineering Sichuan University Chengdu China
| | - Tong Wu
- State Key Laboratory of Polymer Materials Engineering, College of Polymer Science and Engineering Sichuan University Chengdu China
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6
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Microporous formation and evolution mechanism of PTFE fibers/isotactic polypropylene membranes by interface separation. J Memb Sci 2021. [DOI: 10.1016/j.memsci.2021.119333] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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7
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Comparison of the Structural Evolution of β Polypropylene during the Sequential and Simultaneous Biaxial Stretching Process. CHINESE JOURNAL OF POLYMER SCIENCE 2021. [DOI: 10.1007/s10118-021-2534-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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Zhang D, Ding L, Yang F, Lan F, Cao Y, Xiang M. Structural evolution of β-iPP with different supermolecular structures during the simultaneous biaxial stretching process. Polym J 2020. [DOI: 10.1038/s41428-020-00430-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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9
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Ding L, Zhang D, Wu T, Yang F, Lan F, Cao Y, Xiang M. The unusual delamination phenomenon of three kinds of lithium‐ion battery separators. POLYM INT 2020. [DOI: 10.1002/pi.6122] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Lei Ding
- State Key Laboratory of Polymer Materials Engineering Sichuan University Chengdu China
| | - Daoxin Zhang
- State Key Laboratory of Polymer Materials Engineering Sichuan University Chengdu China
| | - Tong Wu
- College of Polymer Science and Engineering Sichuan University Chengdu China
| | - Feng Yang
- State Key Laboratory of Polymer Materials Engineering Sichuan University Chengdu China
| | - Fang Lan
- State Key Laboratory of Polymer Materials Engineering Sichuan University Chengdu China
| | - Ya Cao
- State Key Laboratory of Polymer Materials Engineering Sichuan University Chengdu China
| | - Ming Xiang
- State Key Laboratory of Polymer Materials Engineering Sichuan University Chengdu China
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Ding C, Yang Y, Liu L, Wu GG, Yin B, Yang MB. Surfactant-assisted β-NA supramolecular self-assembly in mini injection molding PP composite. POLYMER 2020. [DOI: 10.1016/j.polymer.2020.122816] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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11
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Lyu D, Sun Y, Lu Y, Liu L, Chen R, Thompson G, Caton-Rose F, Coates P, Wang Y, Men Y. Suppressed Cavitation in Die-Drawn Isotactic Polypropylene. Macromolecules 2020. [DOI: 10.1021/acs.macromol.0c00005] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Dong Lyu
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Renmin Street 5625, Changchun 130022, P. R. China
- University of Science and Technology of China, Hefei 230026, P. R. China
| | - Yingying Sun
- ExxonMobil Asia Pacific Research & Development Co., Ltd., 1099 Zixing Road, Minhang District, Shanghai 200241, P. R. China
| | - Ying Lu
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Renmin Street 5625, Changchun 130022, P. R. China
| | - Lingzhi Liu
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Renmin Street 5625, Changchun 130022, P. R. China
| | - Ran Chen
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Renmin Street 5625, Changchun 130022, P. R. China
| | - Glen Thompson
- Polymer Interdisciplinary Research Centre, University of Bradford, Bradford BD7 1DP, U.K
| | - Fin Caton-Rose
- Polymer Interdisciplinary Research Centre, University of Bradford, Bradford BD7 1DP, U.K
| | - Phil Coates
- Polymer Interdisciplinary Research Centre, University of Bradford, Bradford BD7 1DP, U.K
| | - Yan Wang
- Key Laboratory of High Performance Plastics (Jilin University), Ministry of Education, National & Local Joint Engineering Laboratory for Synthesis Technology of High Performance Polymer, College of Chemistry, Jilin University, Changchun 130012, P. R. China
| | - Yongfeng Men
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Renmin Street 5625, Changchun 130022, P. R. China
- University of Science and Technology of China, Hefei 230026, P. R. China
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Yang Y, Wu G, Ding C, Zhang Y, Yang W, Yang M. Formation of oriented β‐transcrystals induced by self‐assembly of nucleating agent and its micropores formation during uniaxial stretching. POLYMER CRYSTALLIZATION 2020. [DOI: 10.1002/pcr2.10129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Yu Yang
- College of Polymer Science and EngineeringSichuan University, State Key Laboratory of Polymer Materials Engineering Chengdu Sichuan China
| | - Gao‐Gao Wu
- College of Polymer Science and EngineeringSichuan University, State Key Laboratory of Polymer Materials Engineering Chengdu Sichuan China
| | - Chao Ding
- College of Polymer Science and EngineeringSichuan University, State Key Laboratory of Polymer Materials Engineering Chengdu Sichuan China
| | - Ya Zhang
- College of Polymer Science and EngineeringSichuan University, State Key Laboratory of Polymer Materials Engineering Chengdu Sichuan China
| | - Wei Yang
- College of Polymer Science and EngineeringSichuan University, State Key Laboratory of Polymer Materials Engineering Chengdu Sichuan China
| | - Ming‐Bo Yang
- College of Polymer Science and EngineeringSichuan University, State Key Laboratory of Polymer Materials Engineering Chengdu Sichuan China
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Deformation-Induced Crystallization Behavior of Isotactic Polypropylene Sheets Containing a β-Nucleating Agent under Solid-State Stretching. Polymers (Basel) 2020; 12:polym12061258. [PMID: 32486274 PMCID: PMC7362179 DOI: 10.3390/polym12061258] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2020] [Revised: 05/26/2020] [Accepted: 05/28/2020] [Indexed: 11/24/2022] Open
Abstract
The deformation-induced crystallization of an isotactic polypropylene (iPP) sheet containing a β-nucleating agent was evaluated. The phase transformation of the β-modifications was investigated and the crystal morphology was observed at room temperature after stretching at different temperatures. The results showed that the crystallinity increased after solid-state stretching. When the stretching temperature was below the initial crystallization temperature, stretching deformation promoted the orientation of amorphous molecular chains. When the deformation temperature exceeded the crystallization temperature, part of the β-modifications underwent a phase transformation process and was stretched into a shish-kebab structure. However, once the stretching temperature was close to the melting point, the β-modifications melted and recrystallized, and the shish-kebab structure underwent stress relaxation due to poor thermal stability, transforming into α-modifications. It was revealed that the crystal phase transformation mechanism of the β-modifications was based on the orientation of the molecular chains between the adjacent lamellae. In addition, the shish-kebab cylindrite structure played an important role in modifying the tensile and impact properties of the iPP sheet. The tensile and impact strengths increased by as much as 34% and 126%, respectively.
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Ding L, Zhang D, Wu T, Yang F, Lan F, Cao Y, Xiang M. Three-dimensional crystal structure evolution and micropore formation of β-iPP during biaxial stretching. POLYMER 2020. [DOI: 10.1016/j.polymer.2020.122471] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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15
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Ding C, Wu GG, Zhang Y, Yang Y, Yin B, Yang MB. Effect of surfactant assisted β-nucleating agent self-assembly on the crystallization of polypropylene. POLYMER 2019. [DOI: 10.1016/j.polymer.2019.121895] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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16
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Ding C, Wu G, Zhang Y, Chen W, Yin B, Yang M. Supramolecular self‐assembly of compound β nucleating agent and effect on polypropylene microporous membrane. POLYMER CRYSTALLIZATION 2019. [DOI: 10.1002/pcr2.10080] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Chao Ding
- College of Polymer Science and Engineering, Sichuan UniversityState Key Laboratory of Polymer Materials Engineering Chengdu Sichuan China
| | - Gao‐Gao Wu
- College of Polymer Science and Engineering, Sichuan UniversityState Key Laboratory of Polymer Materials Engineering Chengdu Sichuan China
| | - Ya Zhang
- College of Polymer Science and Engineering, Sichuan UniversityState Key Laboratory of Polymer Materials Engineering Chengdu Sichuan China
| | - Wen‐Bo Chen
- College of Polymer Science and Engineering, Sichuan UniversityState Key Laboratory of Polymer Materials Engineering Chengdu Sichuan China
| | - Bo Yin
- College of Polymer Science and Engineering, Sichuan UniversityState Key Laboratory of Polymer Materials Engineering Chengdu Sichuan China
| | - Ming‐Bo Yang
- College of Polymer Science and Engineering, Sichuan UniversityState Key Laboratory of Polymer Materials Engineering Chengdu Sichuan China
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Wu GG, Ding C, Chen WB, Zhang Y, Yang W, Yang MB. Effect of the content of β form crystals on biaxially stretched polypropylene microporous membranes and the tuning of pore structures. POLYMER 2019. [DOI: 10.1016/j.polymer.2019.05.003] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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